EP1023534B1 - Electrically controlled valve - Google Patents
Electrically controlled valve Download PDFInfo
- Publication number
- EP1023534B1 EP1023534B1 EP98945315A EP98945315A EP1023534B1 EP 1023534 B1 EP1023534 B1 EP 1023534B1 EP 98945315 A EP98945315 A EP 98945315A EP 98945315 A EP98945315 A EP 98945315A EP 1023534 B1 EP1023534 B1 EP 1023534B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- guide
- valve body
- accordance
- stop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001960 triggered effect Effects 0.000 claims abstract 2
- 239000012530 fluid Substances 0.000 abstract 2
- 239000000446 fuel Substances 0.000 description 12
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0077—Valve seat details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
Definitions
- the invention relates to an electrically controllable valve according to the preamble of claim 1.
- a feed pump carries the fuel with you low pressure of the suction side of a high pressure pump, usually one mechanically driven piston pump to run the fuel over injects an injector under high pressure into the internal combustion engine.
- the amount of fuel injected per duty cycle is limited by the fact that an electrically controllable valve Connection between the pressure line of the injection pump and a Reflux channel and thus the effective promotion of the injection stroke completed.
- a generic valve of an injection device is from DE 34 06 198 62 known.
- the electromagnetically actuated valve has a valve seat, a valve stem with a guide member, one Valve body in the form of a valve disc, an electromagnetic Device and a valve spring.
- the valve stem is with one Guide part axially movable in a valve housing, wherein an electromagnet in the excited state the valve body via an elastic Element against the force of the valve spring against you Valve seat pulls and the valve spring when the electromagnet is de-energized opens the valve body a limited distance.
- the Fuel is supplied to the valve via a pressure channel that is in an annular space between the valve seat and the guide part opens. So there is no or only little on the valve due to fuel pressure the guide part points to the annular space towards a paragraph, the ring surface of the hydraulically effective Diameter of the valve body corresponds substantially, so that the pressure forces acting on the valve body on the valve stem compensate.
- a further generic valve is one Injector known, wherein a contact surface between a axially movable valve body and a valve seat fixed to the housing through a step, i.e. a non-continuous transition, is limited on the valve body.
- the contact surface closes towards the inside a baffle, causing the flow to coaxial is diverted to the outflow channel.
- the invention has for its object the flow conditions to improve in the area of the valve seat without relying on the above Having to forego advantages. It is invented solved by the features of claim 1.
- the contact surface between the valve body and the valve seat is limited by a step to the outside a guide surface connects.
- the ones at the Step subsequent guide surface can be designed so that the Liquid is optimally drained to a reflux channel so that Cavitation and associated noise can be avoided.
- the step is formed by the edge of the valve body and a separate guide body closes at the edge of the valve body on.
- the guide body can be connected to the valve housing, e.g. connected in an advantageous manner via guide vanes or to the stop be that limits the opening stroke of the valve body. there the guide surface closes in the open position of the valve body to the contact surface of the valve body, so that a can develop favorable flow.
- the space between the guide body, the stop and the valve body, in which the valve body is immersed during the opening stroke expediently through radially directed drainage channels with the Backflow channel connected so that during the opening of the valve body there is no hydraulic reaction.
- the sub-claims included some variants for the execution of the drainage channels. Through the Dimensioning the drainage channels can be a targeted damping of the Valve can be reached.
- An electrically controllable valve 1 is via a device 3, which can be an electromagnet or a piezoelectric element, controllable.
- the device 3 counteracts in the activated state the force of a valve spring 4 on a valve stem 8, the a guide part 9 is guided axially in a valve housing 2.
- the Valve spring 4 is housed and supported in a spring chamber 5 one end of a disc 7 on the valve housing 2 attached device and with its other end via a spring plate 6 on valve stem 8.
- a valve body 10 is located at the free end of the valve stem 8 in the form of a valve plate, which has a valve seat 13 on the valve housing 2 works together.
- a liquid in the case of a fuel injection pump Fuel, is under high pressure over a Pressure channel 12, which in an annular space 11 between the guide part 9th and opens the valve body 10, fed to the valve 1 and in the Open position shown derived in a return flow channel 27.
- the Valve spring 4 presses the valve body 10 against in this position a stop 25.
- the valve body 10 covers the Annulus 11 in the radial direction only slightly, so that Edge of the valve body 10 results in a narrow contact surface 14 which is limited to the outside by a step 15.
- the level 15 is after 2-5 and 7 formed by the edge 17 of the valve body 10 while 6, the stage 15 by a paragraph is formed in the valve body 10.
- Level 15 follows a guide surface 16 through which the flow of fuel to the Return flow channel 27 is optimized.
- the guide surface 16 can on the valve body 10 can be formed directly (Fig. 6) or part of a Guide body 18. This can be firmly connected to the stop 25 or be integrally formed. It is also possible to use the To connect valve housing 2 (Fig. 6), which is conveniently about Guide vanes 26 take place, which support the effect of the guide surface 16.
- the stop 25 and the guide body 18 a space 28 is formed, which with drainage channels 21-24 Backflow channel 27 is connected to a jam of fuel in to avoid this space 28 when opening the valve 1.
- the drainage channels 21-24 can be designed differently. This is shown in Fig. 2 one with the stop 25 fixedly connected guide body 18, the drainage channels 19 in the guide body 18 between this and the stop 25 has.
- the valve body 10 has drainage channels on the end face 20, which can be formed by grooves or millings.
- the stop 25 has continuous drainage channels 21 which lead from the area of the valve body 10 through the area of the guide body 18 to the return flow channel 27.
- 4 and 5 are formed in the guide body 18, which is connected to the stop 25, by slots 24 or bores 22.
- the bore 22 extends into the area of the end face of the valve body 10. Since the guide body 18 is connected to the valve housing 2 in the embodiment according to FIG. 6, the drainage channel 23 can be formed by an annular space between the guide body 18 and the stop 25 become.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
Description
Die Erfindung betrifft ein elektrisch ansteuerbares Ventil nach dem Oberbegriff von Anspruch 1.The invention relates to an electrically controllable valve according to the preamble of claim 1.
Elektrisch ansteuerbare Ventile, die durch Elektromagnete, piezoelektrische Elemente und dergleichen betätigt werden, werden unter anderem bei Kraftstoffeinspritzvorrichtungen für Brennkraftmaschinen verwendet. Hierbei führt eine Speisepumpe den Kraftstoff mit einem niedrigen Druck der Saugseite einer Hochdruckpumpe, in der Regel einer mechanisch angetriebenen Kolbenpumpe zu, die den Kraftstoff über ein Einspritzventil unter hohem Druck in die Brennkraftmaschine einspritzt. Die Menge des pro Arbeitszyklus eingespritzten Kraftstoffs wird dadurch begrenzt, daß ein elektrisch ansteuerbares Ventil die Verbindung zwischen der Druckleitung der Einspritzpumpe und einem Rückflußkanal herstellt und damit die wirksame Förderung des Einspritzhubs beendet.Electrically controllable valves by electromagnets, piezoelectric Elements and the like are operated under other in fuel injection devices for internal combustion engines used. Here, a feed pump carries the fuel with you low pressure of the suction side of a high pressure pump, usually one mechanically driven piston pump to run the fuel over injects an injector under high pressure into the internal combustion engine. The amount of fuel injected per duty cycle is limited by the fact that an electrically controllable valve Connection between the pressure line of the injection pump and a Reflux channel and thus the effective promotion of the injection stroke completed.
Ein gattungsmäßiges Ventil einer Einspritzvorrichtung ist aus der DE 34 06 198 62 bekannt. Das elektromagnetisch betätigbare Ventil weist einen Ventilsitz, einen Ventilschaft mit einem Führungsteil, einen Ventilkörper in Form eines Ventiltellers, eine elektromagnetische Einrichtung und eine Ventilfeder auf. Der Ventilschaft ist mit einem Führungsteil axial beweglich in einem Ventilgehäuse geführt, wobei ein Elektromagnet im erregten Zustand den Ventilkörper über ein elastisches Element entgegen der Kraft der Ventilfeder gegen einen Ventilsitz zieht und die Ventilfeder bei stromlosem Zustand des Elektromagneten den Ventilkörper um einen begrenzten Weg öffnet. Der Kraftstoff wird dem Ventil über einen Druckkanal zugeführt, der in einen Ringraum zwischen dem Ventilsitz und dem Führungsteil mündet. Damit auf das Ventil durch den Kraftstoffdruck keine oder nur geringe hydraulische Kräfte wirken, weist der Führungsteil zum Ringraum hin einen Absatz auf, dessen Ringfläche dem hydraulisch wirksamen Durchmesser des Ventilkörpers im wesentlichen entspricht, so daß sich die auf den Ventilkörper wirkenden Druckkräfte am Ventilschaft ausgleichen.A generic valve of an injection device is from DE 34 06 198 62 known. The electromagnetically actuated valve has a valve seat, a valve stem with a guide member, one Valve body in the form of a valve disc, an electromagnetic Device and a valve spring. The valve stem is with one Guide part axially movable in a valve housing, wherein an electromagnet in the excited state the valve body via an elastic Element against the force of the valve spring against you Valve seat pulls and the valve spring when the electromagnet is de-energized opens the valve body a limited distance. The Fuel is supplied to the valve via a pressure channel that is in an annular space between the valve seat and the guide part opens. So there is no or only little on the valve due to fuel pressure the guide part points to the annular space towards a paragraph, the ring surface of the hydraulically effective Diameter of the valve body corresponds substantially, so that the pressure forces acting on the valve body on the valve stem compensate.
Durch Verschleiß aufgrund von Feststoffpartikeln im Kraftstoff und Kavitation sowie durch Setzerscheinungen am Ventilsitz verändert sich der wirksame hydraulische Durchmesser im Laufe der Zeit und das zu Anfang gegebene hydraulische Gleichgewicht liegt nicht mehr vor. Dadurch kann die Ventilfunktion erheblich gestört werden, so daß eine exakte Absteuerung des Kraftstoffs nicht mehr gewährleistet ist.Due to wear due to solid particles in the fuel and Cavitation as well as changes in the valve seat the effective hydraulic diameter over time and that The hydraulic balance given at the beginning is no longer available. This can significantly disrupt the valve function, so that a exact control of the fuel is no longer guaranteed.
Es wurde bereits vorgeschlagen, DE 19 716 041.7, durch geometrische
Maßnahmen dafür zu sorgen, daß der wirksame hydraulische Durchmesser
durch Verschleiß und Setzerscheinungen gegenüber dem Auslegezustand
nicht größer wird bzw. begrenzt wird. Dies wird z.B. dadurch erreicht,
daß der Ventilkörper und der Ventilsitz nur eine geringe Überdeckung
aufweisen. Dadurch bleibt die kleine Kontaktfläche selbst
bei Verschleiß relativ konstant. Es hat sich aber gezeigt, daß durch
die Maßnahmen die Strömungsverhältnisse am Ventilsitz ungünstig
beeinflußt werden, so daß verstärkt mit Kavitation zu rechnen ist,
bzw. die Dynamik während des Öffnens des Ventils verschlechtert
wird.It has already been proposed,
Aus der US-A-4 653 455 ist ein weiteres gattungsmäßiges Ventil einer Einspritzvorrichtung bekannt, wobei eine Kontaktfläche zwischen einem axial beweglichen Ventilkörper und einem gehäusefesten Ventilsitz durch eine Stufe, also einen nicht kontinuierlichen Übergang, am Ventilkörper begrenzt ist. An die Kontaktfläche schließt sich nach innen eine Leitfläche an, wodurch die Strömung in einen koaxial zum Ventil verlaufenden Abströmkanal umgelenkt wird.From US-A-4 653 455 a further generic valve is one Injector known, wherein a contact surface between a axially movable valve body and a valve seat fixed to the housing through a step, i.e. a non-continuous transition, is limited on the valve body. The contact surface closes towards the inside a baffle, causing the flow to coaxial is diverted to the outflow channel.
Der Erfindung liegt die Aufgabe zugrunde, die Strömungsverhältnisse im Bereich des Ventilsitzes zu verbessern, ohne auf die oben geschilderten Vorteile verzichten zu müssen. Sie wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.The invention has for its object the flow conditions to improve in the area of the valve seat without relying on the above Having to forego advantages. It is invented solved by the features of claim 1.
Nach der Erfindung wird die Kontaktfläche zwischen dem Ventilkörper und dem Ventilsitz durch eine Stufe nach außen begrenzt, an die sich eine Leitfläche anschließt. Durch die Stufe wird gleichzeitig der wirksame hydraulische Durchmesser des Ventilkörpers begrenzt, der somit während der gesamten Lebensdauer gleichbleibt. Die sich an die Stufe anschließende Leitfläche kann so gestaltet werden, daß die Flüssigkeit optimal zu einem Rückflußkanal abgeleitet wird, so daß Kavitation und damit verbundene Geräusche vermieden werden.According to the invention, the contact surface between the valve body and the valve seat is limited by a step to the outside a guide surface connects. Through the level the effective hydraulic diameter of the valve body limits the thus remains the same throughout the entire service life. The ones at the Step subsequent guide surface can be designed so that the Liquid is optimally drained to a reflux channel so that Cavitation and associated noise can be avoided.
Erfindungsgemäß wird die Stufe vom Rand des Ventilkörpers gebildet und ein separater Leitkörper schließt sich an den Rand des Ventilkörpers an. Der Leitkörper kann sowohl mit dem Ventilgehäuse, z.B. in vorteilhafter Weise über Leitschaufeln oder mit dem Anschlag verbunden sein, der den Öffnungshub des Ventilkörpers begrenzt. Dabei schließt sich die Führungsfläche in der Öffungsstellung des Ventilkörpers an die Kontaktfläche des Ventilkörpers an, so daß sich eine günstige Strömung ausbilden kann.According to the invention, the step is formed by the edge of the valve body and a separate guide body closes at the edge of the valve body on. The guide body can be connected to the valve housing, e.g. connected in an advantageous manner via guide vanes or to the stop be that limits the opening stroke of the valve body. there the guide surface closes in the open position of the valve body to the contact surface of the valve body, so that a can develop favorable flow.
Der Raum zwischen dem Leitkörper, dem Anschlag und dem Ventilkörper, in den der Ventilkörper während des Öffnungshubs eintaucht, ist zweckmäßigerweise durch radial gerichtete Drainagekanäle mit dem Rückflußkanal verbunden, damit während des Öffnens des Ventilkörpers keine hydraulische Rückwirkung entsteht. Die Unteransprüche enthalten einige Varianten zur Ausführung der Drainagekanäle. Durch die Dimensionierung der Drainagekanäle kann eine gezielte Dämpfung des Ventils erreicht werden. The space between the guide body, the stop and the valve body, in which the valve body is immersed during the opening stroke expediently through radially directed drainage channels with the Backflow channel connected so that during the opening of the valve body there is no hydraulic reaction. The sub-claims included some variants for the execution of the drainage channels. Through the Dimensioning the drainage channels can be a targeted damping of the Valve can be reached.
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt.Further advantages result from the following description of the drawing. Exemplary embodiments of the invention are shown in the drawing.
Es zeigt:
- Fig. 1
- einen schematischen Teilschnitt durch ein erfindungsgemäßes Ventil,
- Fig. 2
- einen vergrößerten Ausschnitt entsprechend der Linie II in Fig. 1,
- Fig. 3-6
- Varianten zur Fig. 2.
- Fig. 1
- 2 shows a schematic partial section through a valve according to the invention,
- Fig. 2
- 2 shows an enlarged section along line II in FIG. 1,
- Fig. 3-6
- Variants to FIG. 2.
Ein elektrisch ansteuerbares Ventil 1 ist über eine Einrichtung 3,
die ein Elektromagnet oder ein piezoelektrisches Element sein kann,
ansteuerbar. Die Einrichtung 3 wirkt im angesteuerten Zustand entgegen
der Kraft einer Ventilfeder 4 auf einen Ventilschaft 8, der mit
einem Führungsteil 9 in einem Ventilgehäuse 2 axial geführt ist. Die
Ventilfeder 4 ist in einer Federkammer 5 untergebracht und stützt
sich mit einem Ende über eine Scheibe 7 an der am Ventilgehäuse 2
befestigten Einrichtung und mit ihrem anderen Ende über einen Federteller
6 am Ventilschaft 8 ab.An electrically controllable valve 1 is via a
Am freien Ende des Ventilschafts 8 befindet sich ein Ventilkörper 10
in Form eines Ventiltellers, der mit einem Ventilsitz 13 am Ventilgehäuse
2 zusammenarbeitet. Eine Flüssigkeit, im Falle einer Kraftstoffeinspritzpumpe
Kraftstoff, wird unter hohem Druck über einen
Druckkanal 12, der in einen Ringraum 11 zwischen dem Führungsteil 9
und dem Ventilkörper 10 mündet, dem Ventil 1 zugeführt und in der
gezeigten offenen Stellung in einen Rückflußkanal 27 abgeleitet. Die
Ventilfeder 4 drückt in dieser Stellung den Ventilkörper 10 gegen
einen Anschlag 25. A
Wie aus Fig. 2 besser hervorgeht, überdeckt der Ventilkörper 10 den
Ringraum 11 in radialer Richtung nur geringfügig, so daß sich am
Rand des Ventilkörpers 10 eine schmale Kontaktfläche 14 ergibt, die
durch eine Stufe 15 nach außen begrenzt ist. Die Stufe 15 wird nach
Fig. 2-5 und 7 von dem Rand 17 des Ventilkörpers 10 gebildet, während
bei der Ausgestaltung nach Fig. 6 die Stufe 15 durch einen Absatz
im Ventilkörper 10 gebildet ist. An die Stufe 15 schließt sich
eine Leitfläche 16 an, durch die die Strömung des Kraftstoffs zum
Rückflußkanal 27 optimiert ist. Die Leitfläche 16 kann am Ventilkörper
10 unmittelbar angeformt sein (Fig. 6) oder Bestandteil eines
Leitkörpers 18 sein. Dieser kann mit dem Anschlag 25 fest verbunden
oder einstückig angeformt sein. Ferner ist es möglich, ihn mit dem
Ventilgehäuse 2 zu verbinden (Fig. 6), was zweckmäßigerweise über
Leitschaufeln 26 erfolgt, die die Wirkung der Leitfläche 16 unterstützen.As can be seen better from FIG. 2, the
Zwischen dem Ventilkörper 10, dem Anschlag 25 und dem Leitkörper 18
wird ein Raum 28 gebildet, der über Drainagekanäle 21-24 mit dem
Rückflußkanal 27 verbunden ist, um einen Stau des Kraftstoffs in
diesem Raum 28 beim Öffnen des Ventils 1 zu vermeiden. Die Drainagekanäle
21-24 können unterschiedlich gestaltet sein. So zeigt Fig. 2
einen mit dem Anschlag 25 fest verbundenen Leitkörper 18, der Drainagekanäle
19 in dem Leitkörper 18 zwischen diesem und dem Anschlag
25 aufweist. Ferner hat der Ventilkörper 10 stirnseitig Drainagekanäle
20, die durch Nuten oder Einfräsungen geformt sein können.Between the
Bei der Ausgestaltung nach Fig. 3 weist der Anschlag 25 durchgehende
Drainagekanäle 21 auf, die von dem Bereich des Ventilkörpers 10
durch den Bereich des Leitkörpers 18 bis zum Rückflußkanal 27 führen.
Die Drainagekanäle nach Fig. 4 und 5 werden in dem Leitkörper 18,
der mit dem Anschlag 25 verbunden ist, durch Schlitze 24 bzw. Bohrungen
22 gebildet. Die Bohrung 22 reicht dabei bis in den Bereich
der Stirnfläche des Ventilkörpers 10. Da in der Ausführung nach Fig.
6 der Leitkörper 18 mit dem Ventilgehäuse 2 verbunden ist, kann
hierbei der Drainagekanal 23 durch einen Ringraum zwischen dem Leitkörper
18 und dem Anschlag 25 gebildet werden.3, the
4 and 5 are formed in the
Claims (6)
- An electrically triggerable valve (1) with a device (3) which, when triggered, moves a valve shaft (8) with a valve body (10) axially against the force of a valve spring (4), which works together with a valve seat (13) on a valve housing (2) and determines the flow through the valve (1), the valve shaft (8) passing through the valve housing (2) and forming with the valve housing (2) between its guide (9) and the valve body (10) a ring-shaped chamber (11) into which a pressure channel (12) opens out, and the contact surface (14) between the valve body (10) and the valve seat (13) being limited by a step (15) adjoining which is a guide surface (16),
characterised in that
the step is formed by the edge of the valve body (10) which adjoins the guide surface (16) externally and which encloses a separate guide body (18) which forms the guide surface (16) which is connected to the valve housing (12) or a stop (25) which limits the opening stroke of the valve body (10). - A valve in accordance with claim 1,
characterised in that
the guide body (18) has radially oriented drainage channels (19,20,21,22, 23, 24) which connect a space (28) adjacent to the valve body (10) to a return channel (27). - A valve in accordance with one of the preceding claims,
characterised in that
the guide body (18) has radially running slits (24). - A valve in accordance with one of the preceding claims,
characterised in that
drainage channels (20, 21) are provided between the stop (25) and the valve body (10). - A valve in accordance with one of the preceding claims,
characterised in that
the guide body (18) is fixed to the valve housing (2) via guide blades (26) which are fitted downstream of the guide body (18) in the direction of flow. - A valve in accordance with one of claims 1 to 4,
characterised in that
the guide body (18) is formed as one piece with the stop (25) and the drainage channels take the form of holes (22).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997145124 DE19745124C1 (en) | 1997-10-13 | 1997-10-13 | Electrically operated valve e.g. for combustion engine fuel injection system |
| DE19745124 | 1997-10-13 | ||
| PCT/EP1998/005682 WO1999019622A1 (en) | 1997-10-13 | 1998-09-08 | Electrically controlled valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1023534A1 EP1023534A1 (en) | 2000-08-02 |
| EP1023534B1 true EP1023534B1 (en) | 2002-11-13 |
Family
ID=7845362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98945315A Expired - Lifetime EP1023534B1 (en) | 1997-10-13 | 1998-09-08 | Electrically controlled valve |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1023534B1 (en) |
| BR (1) | BR9813029A (en) |
| DE (1) | DE19745124C1 (en) |
| WO (1) | WO1999019622A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8305408D0 (en) | 1983-02-26 | 1983-03-30 | Lucas Ind Plc | Fluid control valves |
| DE3581160D1 (en) * | 1984-09-14 | 1991-02-07 | Bosch Gmbh Robert | ELECTRICALLY CONTROLLED FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES. |
| DE4001435A1 (en) * | 1990-01-19 | 1991-07-25 | Kloeckner Humboldt Deutz Ag | CONTROL VALVE |
| DE19716041C2 (en) * | 1997-04-17 | 1999-11-04 | Daimler Chrysler Ag | Electromagnetically actuated valve |
-
1997
- 1997-10-13 DE DE1997145124 patent/DE19745124C1/en not_active Expired - Lifetime
-
1998
- 1998-09-08 WO PCT/EP1998/005682 patent/WO1999019622A1/en active IP Right Grant
- 1998-09-08 EP EP98945315A patent/EP1023534B1/en not_active Expired - Lifetime
- 1998-09-08 BR BR9813029-3A patent/BR9813029A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1023534A1 (en) | 2000-08-02 |
| BR9813029A (en) | 2000-08-15 |
| WO1999019622A1 (en) | 1999-04-22 |
| DE19745124C1 (en) | 1998-10-15 |
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